CN207406494U - A kind of pneumatic pump mechanical trip rotating speed micromatic setting - Google Patents
A kind of pneumatic pump mechanical trip rotating speed micromatic setting Download PDFInfo
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- CN207406494U CN207406494U CN201721383796.9U CN201721383796U CN207406494U CN 207406494 U CN207406494 U CN 207406494U CN 201721383796 U CN201721383796 U CN 201721383796U CN 207406494 U CN207406494 U CN 207406494U
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- mechanical trip
- pump
- flyball
- reducing gear
- rotating speed
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Abstract
The utility model belongs to nuclear power station machinery overhaul technical field, and in particular to a kind of pneumatic pump mechanical trip rotating speed micromatic setting.The fitting depth that the present apparatus is suitable for adjusting mechanical trip flyball on the pump shaft of pneumatic pump carrys out control machinery dropout rotating speed, is connected with each other with pump housing hydroecium cover board, pump shaft and the mechanical trip flyball in pneumatic pump, it is characterised in that：Including 1 bottom plate, 1 reducing gear, 1 output shaft.Input angle is scaled up by reducing gear, more can accurately control the rotation angle of adjusting nut.
Description
Technical field
The utility model belongs to nuclear power station machinery overhaul technical field, and in particular to a kind of pneumatic pump mechanical trip rotating speed is micro-
Adjust device.
Background technology
Three-level turbine driven auxiliary feed-water pump in some nuclear power generating sets cores is using the production of CLYDE UNION companies
TWL45S type pneumatic pumps, the pump are designed with mechanical trip flyball on pump shaft, can be by machine by the adjusting of flyball fitting depth
Tool dropout rotating speed is arranged on zone of reasonableness (9675-9850rpm).
According to QSR supervision outline requirements, each overhaul of nuclear power turbine driven auxiliary feed-water pump is both needed to carry out mechanical trip rotating speed
Verification, there is a situation where that rotating speed verification is unqualified need to adjust.
Dropout flyball positions by adjusting nut, and rotation adjusting nut can realize dropout flyball center of gravity in the opposite of axle center
Position.Eccentric dropout flyball can generate centrifugal force when pump shaft rotates at a high speed, flyball will be made to dash forward when centrifugal force is more than spring force
Shaft edge hits dropout trigger, and main inlet throttle-stop valve is closed, and pump is out of service immediately.
According to the situation that the experience of equipment manufacturer's long-term accumulated and scene actually adjust, mechanical trip flyball is being installed to essence
During tune section, 1 ° every turn clockwise of adjusting nut, corresponding dropout rotating speed increases 50rpm, on the contrary then corresponding reduction.Because of accurate adjustment angle
It is too small, adjustment target can not be accurately positioned by manual mode；And adjustment position present position is narrow and small, can not use high-precision
Metering outfit accurately measured.
Therefore, research and develop, design a kind of pneumatic pump mechanical trip rotating speed micromatic setting, to solve the above problems.
The content of the invention
The technical problem to be solved by the present invention is to provide a kind of pneumatic pump mechanical trip rotating speed micromatic settings, pass through snail
Worm and gear reducing gear, by manual rotation angle enlargement, so as to reach the accurate adjustment purpose of output angle.
In order to realize the purpose, the technical scheme adopted by the utility model is that：
A kind of pneumatic pump mechanical trip rotating speed micromatic setting, suitable for mechanical trip flyball on the pump shaft of adjusting pneumatic pump
Fitting depth carrys out control machinery dropout rotating speed, is mutually interconnected with pump housing hydroecium cover board, pump shaft and the mechanical trip flyball in pneumatic pump
It connects, it is characterised in that：Including 1 bottom plate, 1 reducing gear, 1 output shaft；
Wherein, bottom plate is diamond structure；A group set is bolted with bottom plate in reducing gear, passes through bolt after overall package
It is fixedly attached on the pump housing hydroecium cover board in pneumatic pump；
Reducing gear is worm and gear form, and the fine motion of worm-wheel shaft is realized by rotary worm axis；
Reducing gear top design has dial, is turned by the angle index instruction observation pneumatic pump mechanical trip of dial
The rotation angle of fast micromatic setting and direction；
In output shaft insertion reducing gear, torque is transferred by output shaft double bond, realizes output shaft in reducing gear
It is free to move axially；
Output shaft end sets two bolts, is inserted by bolt at the top of mechanical trip flyball in corresponding hole, realizes and turn round
Square transfers；
Mechanical trip flyball is installed with pump shaft by screw thread, and mechanical trip flyball is adjusted by rotating machinery dropout flyball
Insertion depth.
The advantageous effect of technical solutions of the utility model is：Input angle is scaled up by reducing gear, it can be with
More accurately control the rotation angle of adjusting nut.
Description of the drawings
Fig. 1 is a kind of pneumatic pump mechanical trip rotating speed micromatic setting structure diagram of the utility model；
Fig. 2 is the reducing gear structure chart in the utility model；
Fig. 3 is the base arrangement figure in the utility model；
Fig. 4 is the output shaft structure chart in the utility model.
In figure：1. output shaft, 2. reducing gears, 3. bottom plates, 4. pump body Water chamber end caps, 5. pump shafts, 6. pump shafts machinery are super
Fast flyball.
Specific embodiment
Technical solutions of the utility model are described in detail in the following with reference to the drawings and specific embodiments.
A kind of pneumatic pump mechanical trip rotating speed micromatic setting, suitable for mechanical trip flyball on the pump shaft of adjusting pneumatic pump
Fitting depth carrys out control machinery dropout rotating speed, is mutually interconnected with pump housing hydroecium cover board, pump shaft and the mechanical trip flyball in pneumatic pump
It connects, it is characterised in that：Including 1 bottom plate, 1 reducing gear, 1 output shaft；
Wherein, bottom plate is diamond structure；A group set is bolted with bottom plate in reducing gear, passes through bolt after overall package
It is fixedly attached on the pump housing hydroecium cover board in pneumatic pump；
Reducing gear is worm and gear form, and the fine motion of worm-wheel shaft is realized by rotary worm axis；
Reducing gear top design has dial, is turned by the angle index instruction observation pneumatic pump mechanical trip of dial
The rotation angle of fast micromatic setting and direction；
In output shaft insertion reducing gear, torque is transferred by output shaft double bond, realizes output shaft in reducing gear
It is free to move axially；
Output shaft end sets two bolts, is inserted by bolt at the top of mechanical trip flyball in corresponding hole, realizes and turn round
Square transfers；
Mechanical trip flyball is installed with pump shaft by screw thread, and mechanical trip flyball is adjusted by rotating machinery dropout flyball
Insertion depth.
It realizes the technical solution of the utility model, comprises the following steps：
Step 1：According to the last overspeed test as a result, confirming current actual dropout rotating speed, calculating and acceptance criteria
Rotating speed difference, determine the angle of adjustment and direction needed for flyball adjusting nut.
Step 2：Adjustment instrument bottom plate is fixed to pump housing chamber end face, output shaft passes through adjustment instrument, shaft end plug
It is inserted into dropout flyball adjusting nut.
Step 3：Rotary worm observes rotation angle and direction by dial, until dismounting adjustment dress after putting target location
It puts, confirms that flyball adjusting nut has been adjusted in place.
Step 4：Overspeed test is carried out, observes dropout rotating speed, step 1-3 is repeated if final rotating speed still goes beyond the scope.
Claims (1)
1. a kind of pneumatic pump mechanical trip rotating speed micromatic setting, suitable for the peace of mechanical trip flyball on the pump shaft of adjusting pneumatic pump
Dress depth carrys out control machinery dropout rotating speed, is connected with each other with pump housing hydroecium cover board, pump shaft and the mechanical trip flyball in pneumatic pump,
It is characterized in that：Including 1 bottom plate, 1 reducing gear, 1 output shaft；
Wherein, bottom plate is diamond structure；A group set is bolted with bottom plate in reducing gear, is bolted after overall package
It is connected on the pump housing hydroecium cover board in pneumatic pump；
Reducing gear is worm and gear form, and the fine motion of worm-wheel shaft is realized by rotary worm axis；
Reducing gear top design has dial, micro- by the angle index instruction observation pneumatic pump mechanical trip rotating speed of dial
Adjust rotation angle and the direction of device；
In output shaft insertion reducing gear, torque is transferred by output shaft double bond, realizes axial direction of the output shaft in reducing gear
It moves freely；
Output shaft end sets two bolts, is inserted by bolt at the top of mechanical trip flyball in corresponding hole, realizes that torque passes
It passs；
Mechanical trip flyball is installed with pump shaft by screw thread, and inserting for mechanical trip flyball is adjusted by rotating machinery dropout flyball
Enter depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721383796.9U CN207406494U (en) | 2017-10-25 | 2017-10-25 | A kind of pneumatic pump mechanical trip rotating speed micromatic setting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721383796.9U CN207406494U (en) | 2017-10-25 | 2017-10-25 | A kind of pneumatic pump mechanical trip rotating speed micromatic setting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207406494U true CN207406494U (en) | 2018-05-25 |
Family
ID=62407663
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|---|---|---|---|
| CN201721383796.9U Active CN207406494U (en) | 2017-10-25 | 2017-10-25 | A kind of pneumatic pump mechanical trip rotating speed micromatic setting |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111805462A (en) * | 2020-07-17 | 2020-10-23 | 福建福清核电有限公司 | Pneumatic auxiliary water feed pump mechanical flyweight adjusting tool and method |
| CN114215735A (en) * | 2021-12-14 | 2022-03-22 | 江苏核电有限公司 | Complete tool for regulating rotating speed of steam-driven pump of nuclear power station |
| CN114459741A (en) * | 2021-09-02 | 2022-05-10 | 福建福清核电有限公司 | Off-line calibration method for mechanical flyweight of pneumatic pump |
-
2017
- 2017-10-25 CN CN201721383796.9U patent/CN207406494U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111805462A (en) * | 2020-07-17 | 2020-10-23 | 福建福清核电有限公司 | Pneumatic auxiliary water feed pump mechanical flyweight adjusting tool and method |
| CN111805462B (en) * | 2020-07-17 | 2024-04-09 | 福建福清核电有限公司 | Mechanical flyweight adjusting tool and method for pneumatic auxiliary water supply pump |
| CN114459741A (en) * | 2021-09-02 | 2022-05-10 | 福建福清核电有限公司 | Off-line calibration method for mechanical flyweight of pneumatic pump |
| CN114215735A (en) * | 2021-12-14 | 2022-03-22 | 江苏核电有限公司 | Complete tool for regulating rotating speed of steam-driven pump of nuclear power station |
| CN114215735B (en) * | 2021-12-14 | 2024-05-10 | 江苏核电有限公司 | Complete tool for adjusting rotating speed of pneumatic pump of nuclear power station |
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